Drilling apparatus



W. A. SMTH MILLING APPARATUS.

APPLscATzoN man 05u28, 19:1.

Patented Oct. M, 1919.

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FFCE SMITH, F DENVER, ECOLORADO, vSSIS-NOB. TO THE DENVER ROCK DRILL `MANUFACTURING COMYAINKY, OZE DENVER, COLORADO,"A. CORPORATION OF DELA- y:minime arranarus'.

Specification of Letters ratent. 4- l Patented Oct. 14:, 1919. l

origina; ppueion med nach 19, iai?, serial ne. 155,530. VDivided ananas application mea December o To all 'whom t may concern: l l

naif; known that I, Wm any sans," a citizen of the United States, resldmg at Denver, inv theeounty'of Denver and State of Colorado, have.` inventedcertain new and Auseful Improvements Ain Drilling Apparatus, of which the following is a specification.

" The object of *heinvention is toprovide no vel effective means for securing the drillin "mechanism upon its support( In ejaccompanying drawingsg- Figu e^ 1 is a vertical 'longitudinal' sectional4 `ewl`throu`gh-theapparatus,

Fi "2 and 3 are-cross sectional views' re spectxvelyon `the 2-2and 3'3 of Fig, l, FigsAe and r5' detail perspective views of the front' and rear projections on thelcarriage anddrilling mechanism by which the two are securedtogether.

Similar reference numerals designate corresapondng parts in 'all the figures of the In thembodiment illustrated, a suitable Supportis employedhavi gitudinal gmdeways 7 W ich is slidably mounted'a carriage or cradle 8 that-may be adjusted by any desired means, as for example, a feed screw, a portion of which is shown at 9 and hassuitable engagement therewith.

The carriage is: provlded at its near end with send-conical o posite projectlons 10, and is also provid at its front end with outstanding tapered Hat-sided projections 11. Mounted upon the carriage or cradle 8 is the drill' meehanlsm proper. The'same `consists o a. cylinder member 12 within which reciprocates a hammer piston 13. The cylinder member has a removable rear head 14 and a reduced head 15 whichjs prefera'bll integral with the barrel of said cylinder ormin mtegral shoulder 16.

'llh'e .rear ead 14 is provided with opposite semi-conical projections Y 17 that aredisposedabove theprojections 10 upon the carria e, and engaged `with said projections amping washers 18 having conical sockets 19 that'receive the projec- 10 an 17 are the usual 1on- 2 8, 1917. Serial No. 209,319,

tions 10,and Aibolt opening formed between the carraige and rear head 14 receives a transverse bolt 20, that serves to bind the parts in associated relation, and thus clamp the rear end of the drilling motor to the carriage.

The hammer piston. is arrangedto strike against the rear end of a drill steel, shown at 21, said steel being detacha'bly located in a rotatable drill chuck 22. For the purpose of rotatin this chuck, a motor is employed, consisting of a cylinder member 23 removably mounted on the cylinder 12 by means of l an integral collar 2l: that surrounds the head 15 and is abutted against the shoulder 16.

Within the cylinder 23 is a rotary piston mechanism 25 suitably geared as illustrated at 26-to the chuck 22.

The lower side of the collar24 is pro-- vided -with outstanding fiat-.sided tapered projections 27 disposedv over the projections,

11, and the sets of projections are clamped together by plates 28 having tapered sockets.

that receive the'sam'e. These plates bridge the joint between theI carriage 8 andthe collar and are held in assembled relation by a t1 e bolt 29 passingtransversely between the collar and-carriage and engaged with the plates 28, as clearlyshown in Fig. 2.

By, having one set of projections, as for example, those in the rear designatedv 15 and 17 conical, and the other set with flat faces, it will be obvious that while the parts are securely clamped together, the Hat faces will permit any relative dii'erence in the relation' of the Vprojections and obviate strains t. at might arise if both sets of projections were conical and the sections thereof were slightly I out of proper relation.

construction, operatlon and many advantagesgof the herein described invention will be apparent to'those skilled in the art, without further description, and it will be understood that various changes in the size, shape, proportion and minor details of construction may be resorted to without depart in from the splt or scope of the invention.

thus lsldescribed my invention,

' avin what Iwo aim s nuiivgand desire, to secure by Letters Patent, is

1. In apparatus of tii character set forth, the combination with efdrill actuating motor, of a drill rotating netor removably devices engaged \\ith the combination with a drill actuating motor, o a drill rotating motor having a collar surrounding the drill actuating for securing' the drill actuating inotor'to the carriage, including fastening means engaging' the collar. a

3, In a )paratus ot thci'fharacter set forth, the eomlliiiation with a drill actuating' motor, ot' a drill .rotatingmotor having :L collar surroluiding the drill actuating' motor, an adjustablemarriage, clamping devices engaged with the rear end ot' the drill actnartingrinotor and carriage, and clamping the Collar and earriago.

4. ln appa ratus ot' the character set forth, the combination with a support haringr a longitudinal guide way, of a carriage' slidalily mounted thereon, a drilling motor-supported lyv the carriage. Said motor and cariia`ge ln\\'ingz outstanding associated projecl tions, land means tor securing' the. motor in lixed relation tothe carriage, including clips embracing the corresponding dsets ot projections. 4

), lu apparatlls o t the charaeter .sot forth,

-the eomliination with a .support having'alongitlulinal `Luide way, o't' a carriage. slidalily'wniounted thereon` a drilling:r motor lsupported h v the carriage. said motor and carriage haring troni and rear sets ot' outstandingl projeeions. securing `clips embracing eorreslmnding sets oi said projections, andv transverse lneais 'ronneeting oppositeI clips to clamp them upon the projeiztions` and thereby .tim-dl)v support the motor and carriage..

G. 'In apparatusof theY character set forth the coinbniatlon with *a drilling motor, o an adjustable cari-lage therefor, oppositely extendingsets 1. of xoutstanding.tapered projections.A formed upon the' motor and carruige, cllps embracing thc'cprrespondlng setsf projections, andrtransversely rdisposed bolts connecting opposite clips' for ndraw-ing the saine upon the projections and Athereby securing Vthe motor tothe carriage. motor, an adpistable carriage, and means V7.1111'1' apparatusot'the character seti forth, thc combination with a drilling motor, of a support, therefor, and devices for -separately clamping the motor totl the support, one of said devices e'ectinga positii'e conneet-ion between `the motor and support to prevent their relative 'lonliitndinal movement,` the other constituting a frictional elamp to'permit their 'relatire u'iovenlent.

S. In apparatus of the characterset forth, the combination with :fdl-illing motor, of a support. therefor, said motoran'tll support having sets ot' courting'l substantially yconical projections and sets 'ot' "substantially-flat taeed projections correspondingly'arranged, mips enrln'acfing'the projectio is'io''the ro- 'speotire sets, and means for 'securing the clips in place. i

9. In apparatus of the cl l th(` combination with a' supptii ing motor mounted thereon" ront, s et of clips engagingn the front "")o'tionsof the motor and support' and bridging the joint between them, transversely disposed holding means cngaging'said clips, a rear set of clips engaging the rear portions of the inotor'and supliort.' and bridging the joint iiotii'een them, and transversely disposed fliolding moans engagingsaid latter clips.v

ln testimony whereof, I aiiixmysigiiature in they presenceI of two witnesses'.

er forth, of a. drillll'itnesses. V,

S. lVILLiAiu JOHNSON 'y 3 1a. L. OLDHAM.

AWILLHM A, isfigrrrn, 

